616408504 has 8 divisors (see below), whose sum is σ = 1155765960. Its totient is φ = 308204248.

The previous prime is 616408501. The next prime is 616408549. The reversal of 616408504 is 405804616.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 616408504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (616408501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38525524 + ... + 38525539.

It is an arithmetic number, because the mean of its divisors is an integer number (144470745).

Almost surely, 2^616408504 is an apocalyptic number.

It is an amenable number.

616408504 is a deficient number, since it is larger than the sum of its proper divisors (539357456).

616408504 is a wasteful number, since it uses less digits than its factorization.

616408504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77051069 (or 77051065 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 616408504 is about 24827.5754756682. The cubic root of 616408504 is about 851.0522166447.

The spelling of 616408504 in words is "six hundred sixteen million, four hundred eight thousand, five hundred four".